Balf
abbr. 支气管肺泡灌洗液（Bronchoalveolar Lavage Fluid）
🗣️ 情景例句
Thank you very much.
非常感谢。
I'll work for 5 years and then go back to school.
我会工作五年，然后会学校。
The lawyer was brief and to the point.
律师简明扼要地说道。